RADIK are steel panel radiators - KORADO, as

SVÚOM PRAHA – INFORMATION
SVÚOM PRAHA – INFORMATION
(I.E. STATE RESEARCH INSTITUTE FOR PROTECTION OF MATERIALS)
The below given information defines conditions for appropriate
using steel radiators which are protected with final surface finish in
accordance with DIN 55 900 standard. It also specifies critical locations,
spaces and environment limiting their applications. KORADO,
a.s. (joint-stock co.) recommends the below given advice to be strictly
respected at all practical applications because this will be taken into
consideration in case of judgement and evaluation of any future
claims and/or complaints.
POSSIBILITIES AND LIMITATIONS FOR
USING STEEL RADIATORS WITH SURFACE
FINISH ACCORDING TO
DIN 55 900 STANDARD:
(Explicit comment from the Prague State Research Institute
for Protection of Materials)
1. REQUIREMENTS FOR SURFACE FINISH
OF RADIATORS
1.1. General
The requirements concerning the surface finish of radiators
are defined in German standard DIN 55 900 which bears
the following title: “Surface finish of radiators. Terminology,
requirements, tests. Surface finish made industrially.“
The said standard relates to materials which are used for
surface finish of radiators and it is binding for industrially
made surface finish of radiators for hot water heating and
low pressure steam heating (temperature of the heat-carrying
medium up to 120 °C).
The object of the said standard in not surface finish of radiators
operating with temperatures exceeding 120 °C or which are to be
used in spaces with aggressive and/or humid environment air. Kitchens,
bathrooms etc. and places outside the reach of water shower
spraying and toilets are not considered to be spaces with aggressive
and/or humid environment air.
The DIN 55 900 standard is divided into 2 parts: DIN 55 900-1 defines
the base paint layer for radiators, DIN 55 900-2 defines the final
surface finish of radiators. The said standard specifies reguirements
on paint coating materials applicable for surface finish, i.e. both their
physical-mechanical properties (adhesion, impact
resistance)and corrosion resistance (resistance against condensating
water).
In general terms, the said standard also requires that radiators
with final paint coating must be protected appropriately
for and during: transportation, storage, and mounting, and it
must be possible to clean the radiators surface with common
detergents (non abbrasive).
The said standard is the basis for definition and assessment
of the surface finish quality and for compliance with all
principles therein stipulated, all of which is binding both for
manufacturers and users of radiators. B reach of the scope
of the standard DIN 55 900 by the user may be the cause of
extinction of the producer´s quarantees.
2. QUALITATIVE DESCRIPTION OF TYPICAL
ENVIRONMENTS
The qualitative description of typical environments with
relevant grades of corrosivity is given in the table under the
following title:
Qualitative description of typical environments for judgement
of corrosivity grades:
94 The company reserves the right to make technical changes.
Corrosivity
grade
C-1
C-2
C-3
C-4
C-5
Corrosivity
Very low
Low
Average
High
Very High
Examples of typical
interior environments
Heated spaces with relative low humidity (30
– 65 %) and with negligible uncleanliness, e.g.
office premises, schools, museums, flats, hotels,
shops, etc.
Unsufficiently heated spaces with changeable
temperature and with relative humidity exceeding
70 %. Rare occurrence of condensation
and minor uncleanliness, e.g. warehouses,
corridors, gym halls, etc.
Spaces with average occurrence of condensation
and with average uncleanliness caused by
technological or other processes, e.g. food
production premises, laundry plants, breweries,
dairy houses, meat packing factories, etc.
Spaces with high occurrence of condensation
and with average uncleanliness caused by technological
or other processes, e.g. industrial
manufacturing premises, swimming pools, bath
houses, car-washing facilities, public WCs,
stables, etc..
Spaces with nearly constant occurrence
of condensation and/or with high uncleanliness
caused by technological processes, e.g. mining
premises, underground technological spaces/
rooms/halls, unaired shelters in tropical humid
areas.
The radiators with surface finish complying with the DIN 55
900 standard are applicable in spaces/premises with C 1
interior air environment without limitation for a long period
of service.
However, pursuant to the DIN 55 900-2 standard, the radiators
must not be placed in spaces with aggressive or humid
environment air (C2 – C5). Any placement of such radiators
in the lower defined spaces must be considered as critical.
3. POSSIBILITIES AND LIMITATIONS FOR USING
STEEL RADIATORS WITH SURFACE FINISH
COMPLYING WITH DIN 55 900 STANDARD:
3.1. Spaces with possible water spray or water
solutions spray
In spaces/premises with the C 1 interior environment air, e.g.
in flats, offices, schools and other public buildings, there are also
some rooms (kitchens, bathrooms, toilets) wherein some places with
corrosion activity of C 2 – C 5 can be found.
These are places within a direct reach of water spray or water
solutions spray (e.g. places under kitchen sinks, under wash-basins,
under showers, and some other places which are regularly sprayed
with water). Such places are considered as spaces with humid or
aggressive environment air and they are not suitable for placing radiators
there even though the whole rooms in question (i.e. kitchens,
bathrooms, toilets) are not considered to have aggressive or humid
environment air.